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v A. I. KENNEDY WATERPROOF GLOTH'AND PROCESS OF MAKING SAME.

No. 590,842. Patented Sept. 28,1897.

2 5 waterproof, but

- UNIT D I STATES PATENT OFFICE.

ARTHUR L. KENNEDY, OF BURLINGTON, VERMONT, AssIeNoR, BY MEsNEJ ASSIGNMENTS, TO THE MARSDEN COMPANY, OF CAMDEN, NEW JERSEY, AND PHILADELPHIA, PENNSYLVAN 'wAT ERPRooi- CLOTH AND PROCESS OF MAKING SAME.

SPECIFICATION forming part of Letters Patent Ne. 590,842, dated September as, 1897.

Application filed December 26, 1895. Serial .No. 573,416.

T all-whomlit may concern; 7

Be it known that I, ARTHUR 'L. KENNEDY, a citizen of the 'United States, residing at Burlington, in the- State": of Vermont, have invented certain new and useful Improve- .ments inWaterproo'f Cloth and Processes of -Making the Same, of which'the following is aspecification.

, The principal objects of my present inven- [0 tion are, first, to furnishwaterproof cloth,-

.rope, and the like, which presents its natural structure and un glazed .or uncoated faces and is possessed of flexibility'and durability .andl v is not susceptible to injury upon exposure to u 5 theweather and, second, to provide a simple,

expeditious, and e'fiic'ie'nt method for impregnating the raw fibers of'cloth,..rope, or the like with pyroxylin or its-equivalent. E I An article embodyingfeatures of my i11 2o vention 'iscomposedof animal or vegetable threads suitably 'dinary cloth, or twisted together, as in rope, and these ordinarythreadsare impregnated with pyroxylin, sothat the finished article is presents its ordinary structure andv unglazed or uncoated faces and is flexible and. durable. a

The nature, characteristic features, and. scope of vmy'invention will be more fully .un-

0' derstood from the following descriptiomtaken 1 in connection with the accompanying draw ings, forming part hereof, and in'which Figures 1, 2, and 3 diagrammatically represent stages in the production of the finished 5 article, the latter being illustrated in Fig. 3.

Figs. 4. and 5 diagrammatically show my invention in application to a rope, 'andFigs. 6. I and 7 illustrate in a similar manner myin- I vention in application to a knitted web. o In the drawings, a represents a woven fab-v I ric, b a rope, and c a knitted fabric. x In each lcase these articles resenible in appearance g like known articles. Forexam'ple,"their'faces l are uncoated and unglazed and present fibers or a na or a reticulated structure, but they differ t erefrom in that they are rendered waterproof by reason of the fact. that their threads are impregnated I 'th pyrox'ylinor its equivalent, as will. be

ducing articles fibers,

of my invention threads,

. cellulose is then sprayed or' otherwise treated woven or knitted, as in ormore fully under-- 5o stood from the following description. In proor strands of nitrocellulose or its (Speolmena) equivalent, as acetate. of cellulose, are woven or intertwined as s'tuffers along with the ordinary threads in the article-for spinning, weaving, knitting, and the like.

As shown in Figs. 1, 4,and 6, b designates" nitrocellulose or acetate of cellulose. The article containing nitrocellulose or acetate of with a suitable solvent which converts the nitrocellulose into pyroxylin and the acetate of cellulose into a substance analogous to pyroxylin. This step is represented at c in Fig. 2. The pyroxylin difiuses itself and impregnates the raw fibersand their interstices of the ordinary threads, so that the appearance and structure of the article are not changed, and so that it is made Water: proof and remains uncoated or unglazed and presents its ordinary, textured structure. This step is shown at d in Fig. 2.

It will be obvious to those skilled in the art to which my invention appertains thatmodifications may be made therein without departing from the spirit thereof. Hence I do not limit myself to the details herein set forth and illustrated in the drawings; but, Having thus described the naturev andobjects'of my invention, what I claim as new, and desire to secure by Letters Patent, is.

1. An improved manufacture consisting of the within-described textured waterproof article having its face portions composed of natural fibers and its inner portions. composed of threads'or strands impregnated with a-salt of cellulose, whereby ordinary unglazed or uncoated and nappy faces are presented, substantially as described. I 1

' 2. The describedfprocess which consists in'rgg entwining or interlacing regular or ordinary threads along with extra strandsor fibers of u-ndissolved soluble salt-of cellulose to form. a textured article, and then subjecting the textured article to a solvent .of' the salt of 5 cellulose to dissolve the extra strands or fibers and cause the dissolved salt to impregnate the regular-or ordinary threads, substantiallyas described.

' ARTHUR L. KENNEDY.

-Witnesses: I

()RMOND COLE, .J. D. TANNER.

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